Geometric Proof | Grade 9 Playlist | GCSE Maths Tutor

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A video revising the techniques and strategies for looking at Geometric proofs. (Higher Only).
This video is part of the Congruence and Similarity module in GCSE maths, see my other videos below to continue with the series.
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Revision videos:
The Entire GCSE in Only 2 Hours!! Higher and Foundation Revision | GCSE Maths Tutor - • Everything You Need To...
Everything for a Grade 6-9 in your GCSE Maths Exam! Higher Maths Exam Revision | GCSE Maths Tutor - • Everything for a Grade...
All the formulas you need to get a grade 6-9 in your maths exam - • All the GCSE Maths For...
More videos in the series:
Similar Shapes with Lengths - • Similar Shapes - Linea...
Similar Shapes with Area and Volume (Higher Only) - • Similar Shapes - Area ...
Congruent Triangle Proofs (Higher and Foundation) - • Congruent Triangle Pro...
Geometric Proof - • Geometric Proof | Grad...
🔹 Watch the video
🔹 Make notes
🔹 Practice the questions
🔹 Mark your work
🔹 Review everything you have learnt
Please like ✅ please comment ✅ please subscribe ✅
00:00 Intro
00:47 Proof 1
07:33 Practice Question
11:42 Proof 2
15:55 Practice Question
19:58 Circle Theorem Proof
26:05 Practice Question
31:27 Outro
Enjoy the video!
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[@TheGCSEMathsTutor]

Correction: at 17:30 I meant BC is the same in both not BD 😩
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[@uyulin5797]

tysm for putting this in the comments! i thought i was losing my mind because i couldn’t understand how BD is part of both highlighted triangles.

[@gurleeeen5328]

@@uyulin5797 ikr

[@Ziad-cp3lu]

Hi i have a questions sir if you dont mind is it alright if you put more than points of proof on a question, does it affect the marks you get ?

[@heartiu4713]

@@uyulin5797 frr same i kept rewatching it like huhh

[@R3dStr1pes]

After 3 days of pure confusion I am finally beigging to understand how to do geometric proof questons. Thank you

[@mythic5034]

Paper 3 tomorrow! Thank you for this it was very helpful 🙏

[@GCSEALevelMaths]

Yesss sir what a top teacher!!! BEST GCSE MATHS TEACHER IS YOU SIR!!!

[@TheGCSEMathsTutor]

Thank you so much for the kind words 😁🙏🏽

[@Ziad-cp3lu]

Best teacher in the world

[@idontknow1630]

Been waiting for this video for so long, my struggles will finally come to an end 😝

[@TheGCSEMathsTutor]

So glad to hear that! I really hope this helped to end the struggle!! 😁🤞🏽

[@TheGCSEMathsTutor]

New Discord Link: discord.gg/MgeYknJd

[@solo3976]

thank you so much for this - i finally understand
!!!

[@andige639]

​Lets go, i cant wait for this. Thank you so much, you really are a life saver for me as a student who want to learn a little more outside of class. Thank you!!

[@TheGCSEMathsTutor]

So glad to hear that, I hope you enjoyed it! 😁🙏🏽

[@didyouforgetalready]

If congruency, similarities and circle theorems was on google maps I would simply rate half a star and say I found a dead cockroach. Every single time I’ve done past papers I’ve struggled so much with only ONE SINGLE TOPIC AND IT’S SIMILARITY AND CONGRUENCE 😠 NO MATTER WHAT, MOCKS, SMALL CLASS TESTS, NORMAL WORKSHEETS, SELF PRACTICE, EVEN AN ONLINE TUTOR. I HATE THIS TOPIC 🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬🤬😡😡😡😡😡🤬 anyway my real exam is in less than 6 days, wish me luck 🍀😢😢

[@richtigress1652]

How did you do?

[@didyouforgetalready]

@@richtigress1652 I got an A unfortunately

[@richtigress1652]

@@didyouforgetalready as in a 7? That’s not unfortunate Welldone!

[@hxl29]

Me rn except my exams tomorrow 💀

[@hackmyrank1144]

@@hxl29same😭

[@turbiyo4026]

broo im literally stuck on a congruency grade 9 question aswell 😭 this will probably help me

[@TheGCSEMathsTutor]

So glad to hear that! Let me know if it helps 😁🙏🏽

[@UK_1487]

You're angel in our hard times straight away from heavens❤🎉😊

[@mystic6970]

Thank you so much this seems like a really tricky topic but this video was very helpful 😁🙏!

[@TheGCSEMathsTutor]

It is a tricky topic! So glad to hear you found it useful 😁🙏🏼

[@aesthetic_disney_1239]

thank you so much!!! it was so helpful :)

[@rubenraccoon2584]

thank you so much i always struggled with understanding geometric proof so this is really helpful! it still confuses me a little but that's because i forget about the basic knowledge for it.

[@TheGCSEMathsTutor]

Well that's great news, you have identified what you need to work on and that the easy part, brush up on your basic knowledge and geometric proof should be fine for you now! Glad to know it was helpful

[@HassanLakiss]

Thank you. Very nicely done.

[@TheGCSEMathsTutor]

My pleasure! Thank you for the kind words 😁🙏🏼

[@jams.149]

Thank you so much!

[@TheGCSEMathsTutor]

No problem at all! Hope it was helpful 😁🙏🏽

[@bloxfruits7710]

I got mocks after tomorrow and this is helping me a lot thanks

[@TheGCSEMathsTutor]

So glad to hear it! Good luck with your mock exam 😁🙏🏼

[@bloxfruits7710]

@@TheGCSEMathsTutor thanks

[@soup_with_lentils9130]

Absolute champ of champs

[@nathanhawey294]

The legend maths tutor!

[@jameschester7839]

The OG of the maths world 🔥🔥

[@TheGCSEMathsTutor]

Thank you so much Nathan! Always appreciate your kind words 😁🙏🏽

[@jameskelliher]

This is what I needed 👍

[@TheGCSEMathsTutor]

So glad to hear it! 🙌🏼🙌🏼

[@kitkat_5425]

thank you!!!!!!!

[@user-jq3qt8no7h]

Pls do a video on Pressure, Force and area. Especially the one on the 2020 paper 1 Edexcel

[@TheGCSEMathsTutor]

Great idea I'll add it to my list!

[@nevergonnaletyoudown9871]

You are a real life saver 🏆🏆and i just sharec the video to all my classmates.THANK YOU

[@cazoxv5006]

at 29:30, if I had used the circle theorem of angles in same segment are equal and then found the other things you had done following up to it, and use the AAS rule, would i get the mark?

[@Daniplaysrobloxx]

Does the way you write the letters matter like with the first practice question u wrote AB=CD can it be AB=DC or does the way you write it matter??

[@saifsavage9304]

Im doing a math gcse resit next week , can you please make a video about it ? 😊

[@TheGCSEMathsTutor]

I have 3 revision videos for each paper! Are you sitting the higher or foundation tier?

[@pogo_master_23]

At 24:38 could you have said that angles AEB = DEC because opposite angle are equal when two lines intersect? Would this be a valid point in a congruency proof?

[@FightorFlight-]

Yes

[@a.a1061]

thank uu

[@ZaimaSadik]

Hi, for the first practice question. Could you say angle AEB and angle DEC are the same because theyre vertically opposite? Thank you

[@elitehydra9037]

For proof 2 could you say that it is sss as the inner triangle is isosceles?

[@oyewusielijah2166]

Thank you sire

[@TheGCSEMathsTutor]

So glad to hear I could help 😁🙏🏼

[@ayzinhooo]

on the first question would it have been possible to get sss instead of sas?

[@jameschester7839]

What a guy 🔥🔥🔥🔥

[@TheGCSEMathsTutor]

Thank you 😁🙏🏽

[@epicgamer5269]

For the first practise question could you say that vertically opposite angles are equal

[@TheGCSEMathsTutor]

Absolutely! Just as long as you meet the 3 part congruency proof any method is fine!

[@olliehancock6932]

for the final question I got the same answer but did
BA=BD as the chords for both subtend the circle so are equal in length
BD=CA as given
Angle BAD= angle CDA as angles in a semicircle are equal
congruent by RHS

[@yuzhegan4902]

Can make some IGCSE video and more daily maths video Hope my maths will improve lot

[@TheGCSEMathsTutor]

All of my videos are for the iGCSE too! I'll be making lots of videos for the GCSE don't worry about that!

[@yuzhegan4902]

@@TheGCSEMathsTutor Okay

[@freenickelodeontvshows9768]

for the first question couldnt you say alternate angles are equal which would be the same as base angles i a isosceles triangle are equal

[@charismaticj3972]

Pertaining to practice question 1.doesnt SSS apply coz the diagonals have the same length ?
Please do reply 😩😩

[@Saddafa-p1q]

Sir for these congruency questions there are many ways to do isn't it . I just wanted to make sure because at the end my proof is same as yours' but the sides and angles I choose are different .

[@mustachioisbae]

17:30 don't you mean BC not BD?

[@TheGCSEMathsTutor]

I did indeed! Whoops, added it into the pinned comment, thanks for spotting that! 😁🙏🏽

[@adamraza7536]

How many more GCSE vids before the whole specification is covered?

[@TheGCSEMathsTutor]

11 more to go! Then it’s just looking at unique questions 😁🙏🏽

[@adamraza7536]

@@TheGCSEMathsTutor thanks so much your a life saver. Your getting so many students high grades

[@HassanLakiss]

There is typo error in your second example, in the concluding statement, it should be triangle ABE.

[@TheGCSEMathsTutor]

Whoops! This is what happens when you work 6am till 7pm and then try and make UA-cam videos when you get home! 💀💀

[@hamzah7]

@@TheGCSEMathsTutor what a hardworking guy. Nice

[@niwhsa]

🤮🤮🙃😭🤢👦🫶👦🤰

[@TheGCSEMathsTutor]

Was it that bad? 😥

[@Warrior7426]

I really hate this topic